class_docstr: Example of a new test function
docstr: Implements the call of the function.
  Under the hood, __call__ delegates to oracle_call + add some noise if noise_level > 0.
docstr_tok: ["Implements","the","call","of","the","function",".","Under","the","hood",",","__call__","delegates","to","oracle_call","+","add","some","noise","if","noise_level",">","0","."]
code: def oracle_call(self, x):  # np.ndarray as input
      """Implements the call of the function.
      Under the hood, __call__ delegates to oracle_call + add some noise if noise_level > 0.
      """
      return (x - self.offset) ** 2
  
file_path: nevergrad/nevergrad/benchmark/additional/example.py
imports: import nevergrad
  from nevergrad import functions
  from nevergrad.benchmark import registry
  from nevergrad.benchmark import Experiment
label_desc: Use image node_id 2 for calling the CustomFunction obj's underlying member method code with example usage: obj.oracle_call(x) and returns: unknown